<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <title>文件上传</title>
</head>
<body>
    <form action="http://127.0.0.1:3000" method="POST" enctype="multipart/form-data">
        <input type="file" name="f1" > <br>
        <input type="submit" value="上传">
    </form>
</body>
</html>